eolymp
Competitions

Азербайджан - подготовка. Февраль 27

The first digit of the power

You are invited to a very simple task: "What is the first digit of the number nn"?

Input

Consists of several test cases. Each test is located on a separate line and contains one number n (1n109).

Output

For each test case print in a separate line the first digit of desired result.

Time limit 1 second
Memory limit 64 MiB
Input example #1
3
4
Output example #1
2
2